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South African Journal of Chemistry

On-line version ISSN 1996-840X
Print version ISSN 0379-4350

S.Afr.j.chem. (Online) vol.61  Durban  2008




Preparation of ultra-fine calcium carbonate by a solvent-free reaction using supersonic airflow and low temperatures



Yan-Hua CaiI, *; Dong-Mei MaII; Ru-Fang PengI; Shi-Jin ChuI

ISchool of Material Science and Engineering, Southwest University of Science and Technology, Mianyan, Sichuan 621010, People's Republic of China
IISchool of Chemistry and Pharmaceutical Engineering, Sichuan University of Science and Engineering, Zigong, Sichuan 643000, People's Republic of China




The treatment of calcium chloride with sodium carbonate under solvent-free conditions with a supersonic airflow and at a low heating temperature leads to the synthesis of ultra-fine calcium carbonate. The reaction not only involves mild conditions, a simple operation, and high yields but also gives a high conversion rate.

Keywords: Supersonic airflow, solvent-free reaction, low temperature, calcium carbonate



Full text available only in pdf format.



The authors are very appreciative of financial support received from the Science and Technology Bureau of Sichuan Province (2006Z02-025).



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Received 6 August 2007
Revised 19 September 2008
Accepted 9 October 2008



* To whom correspondence should be addressed. E-mail:

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